ULS-DeCoNet Blitz Messages Specification

Mon, 01 Jan 0001 00:00:00 +0000

ULSDC-PBDS051125 · version 1.0.4 · issued November 13, 2025
The numbered PDF is the controlled copy: download it from the portal.

Introduction

Purpose

The Blitz protocol is a specialized messaging subsystem within ULS-DeCoNet designed for high-frequency transmission of sensor measurement data from ULS positioning systems.

Key Characteristics

Low Overhead: Fixed 11-byte messages (3-byte header + 8-byte payload)
High Frequency: Optimized for 100+ Hz update rates
Real-time: Minimal latency from sensor to network
Type-safe: Strongly typed message definitions
Compact: Efficient packing of measurement data

Blitz Protocol Overview

Protocol Stack Position

block-beta
 columns 1
 A["Application Layer\n(Blitz Message Handling)"]
 B["IF Protocol\n(IF_CMD_BLITZ = 0x06)"]
 C["Framing Layer"]

Message Flow

flowchart LR
 Sensor --> Measurement --> BlitzEncode["Blitz Encode"] --> IFLayer["IF Layer"] --> Transport --> Receiver
 BlitzEncode --> MsgId["MSG_ID + Data"] --> BlitzCmd["IF_CMD_BLITZ"] --> Frame["UART/CAN Frame"]

Message Format

IF Layer Packet Structure

packet-beta
title "Blitz IF Layer Packet"
0-7: "CMD 0x06 (1 byte)"
8-15: "SRC_LID (1 byte)"
16-31: "MSG_ID (2 bytes)"
32-95: "DATA (8 bytes)"

Total Size: 11 bytes

ULS-DeCoNet Blitz Protocol on UAVLAS Docs